Cita APA (7a ed.)

Vries, M. d. (2010). Protecting marine mammals. Nova Science.

Cita Chicago Style (17a ed.)

Vries, Marielle de. Protecting Marine Mammals. New York: Nova Science, 2010.

Cita MLA (8a ed.)

Vries, Marielle de. Protecting Marine Mammals. Nova Science, 2010.